优化下一代测序用于自体主导多性病的遗传诊断
Deqiong Ma1, Soyoung Cho2, Xinmiao Meng2
1Department of Genetics, Yale School of Medicine.
概括
下一代测序 (NGS) 为诊断自体主导多囊性病 (ADPKD) 提供了高灵敏度,匹配黄金标准方法. 优化的外体测序 (ES) 和基因组测序 (GS) 可以解决超过96%的ADPKD病例.
科学领域:
- 遗传学 是一个遗传学.
- 基因组医学是基因组医学.
- 分子生物学分子生物学
背景情况:
- 自体主导性多囊性病 (ADPKD) 影响1000人中的1人,对功能衰竭有显著的贡献.
- 主要涉及的基因PKD1对遗传分析提出了挑战,原因是伪基因,高同质性和复杂的转录特征.
- 传统的方法,如远程PCR和桑格测序,虽然有效,但正在被下一代测序技术 (NGS) 补充.
研究的目的:
- 评估外体序列测序 (ES) 的诊断产量和准确性,以确定自身主导多囊性病 (ADPKD) 的诊断产量和准确性.
- 将NGS的性能与PKD1和PKD2变种检测的既定金标准方法进行比较.
- 确定最佳的NGS策略,包括管道修改和更深层次的测序,以挑战ADPKD病例.
主要方法:
- 从CRISP队列中对203名ADPKD患者进行了外体序列 (ES) 测序.
- 分析包括对管道修改,捕获试剂,伪基因对齐和未解决案件的更深层次测序 (ES/GS) 的评估.
- 临床遗传学家审查了ES数据,对基因型盲目,将结果与之前的黄金标准发现进行比较.
主要成果:
- 优化ES实现了PKD1变体的95.5%灵敏度和PKD2变体的100%灵敏度.
- 标准NGS管道错过了至少22个PKD1变体,突出了优化分析的重要性.
- 更深度的ES和基因组测序 (GS) 在96%的表型良好ADPKD病例中成功识别了变异,包括平衡的转移.
结论:
- 下一代测序 (NGS) 方法,当优化时,表现出与ADPKD诊断的黄金标准方法相美的灵敏度.
- 外基因组测序与基因组测序相结合,为高比例的ADPKD病例提供了全面的解决方案.
- 概述了在PKD1遗传测试中实施NGS的实际考虑,强调了需要专门的管道.
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